While much less frequent than when using a 4.4 kernel, the problem still occurs for me when using a 4.6 kernel:
uname -a 4.6.0-040600-generic #201606030904 SMP Fri Jun 3 13:06:01 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux dmesg [31606.245708] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun [31606.245846] [drm:intel_pch_fifo_underrun_irq_handler [i915]] *ERROR* PCH transcoder A FIFO underrun [40612.123848] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun [40612.123987] [drm:intel_pch_fifo_underrun_irq_handler [i915]] *ERROR* PCH transcoder A FIFO underrun Ubuntu 16.04 LTS Intel(R) Core(TM) i5 CPU M 520 Thinkpad T410 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1550779 Title: [i915]] *ERROR* CPU pipe A FIFO underrun - Xorg glitches To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1550779/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
